Spring pendulum type spherical multi-magnetoelectric energy harvesting device

Abstract

The utility model discloses a spring pendulum type spherical multi-magnetoelectric energy harvesting device, which comprises an energy harvesting mechanism, a rechargeable battery and a linear voltage stabilizing circuit, and is characterized in that the energy harvesting mechanism comprises a mounting frame, n spring pendulum structures and n voltage conversion modules, the outer surface of the mounting frame is a spherical surface, and the mounting frame is used for rolling under the excitation of external vibration; the n spring pendulum structures are evenly and fixedly installed on the installation frame at intervals and connected with the n voltage conversion modules in a one-to-one correspondence mode, each spring pendulum structure comprises a spring, a coil and a permanent magnet, and each spring pendulum structure enables the permanent magnet to shake to form an alternating magnetic field through swinging of the spring of the spring pendulum structure. Each voltage conversion module is used for converting the magnetoelectric alternating current voltage into direct current voltage capable of charging the rechargeable battery and outputting the direct current voltage to the rechargeable battery, so that the rechargeable battery is charged; the device has the advantages of high space utilization rate and high energy harvesting efficiency.

Description

Technical Field

[0001] The utility model relates to a magnetoelectric energy harvesting device, in particular to a spring-pendulum-type spherical multi-magnetoelectric energy harvesting device. Background Art

[0002] As agricultural and industrial chemicals enter the ocean, disrupting the marine ecological balance and deteriorating the natural environment, it is crucial to assess and monitor the state of marine ecosystems to ensure their sustainability and biodiversity. Ocean monitoring systems are currently a common device used for direct monitoring of marine ecosystems. Ocean monitoring systems have increasingly stringent energy requirements. Conventional chemical batteries are widely used due to their convenience and reliability. However, chemical batteries have limited battery life, pose significant environmental risks, and are difficult to replace and maintain in certain environments. Therefore, research is needed to develop sustainable, long-term energy sources to power ocean monitoring systems. Electromagnetic vibration energy harvesting devices, with their simple structure, pollution-free operation, and low cost, have become an effective method for harvesting energy from environmental vibrations. Existing electromagnetic vibration energy harvesting devices have poor adaptability to environmental vibrations, and most can only capture vibration energy from a single excitation direction. However, given the diverse motion directions of ocean waves, energy harvesting devices sensitive to a single direction are ineffective.

[0003] In response to the above problems, some solutions have been proposed. For example, the Chinese patent publication number CN111181346A discloses an electromagnetic vibration energy capture device for marine robots, which mainly includes a hemisphere, an upper hemisphere shell, a lower hemisphere shell, a support column, a coil, a permanent magnet, and a spherical joint bearing. Although the electromagnetic vibration energy capture device can collect vibration energy in all directions and directly convert it into electrical energy when it is excited, its hemisphere is connected to the support column through a spherical joint bearing. The support column restricts the hemisphere from moving at large angles, and when the hemisphere rotates around the center of the steel ball of the spherical joint bearing, the frictional force causes large losses, resulting in low energy capture efficiency. Moreover, the existence of the support column results in low structural space utilization of the electromagnetic vibration energy capture device.

[0004] For example, Chinese patent publication number CN117833582A discloses a multi-degree-of-freedom electromagnetic energy capture device. This electromagnetic energy capture device includes a spherical shell and a sphere located within the shell. The sphere is capable of rotating around its center at a wide angle and in multiple directions. Coil posts containing coils and permanent magnets are located at both ends of the shell. A permanent magnet is also located on the sphere. When the sphere moves at a wide angle in any direction, the magnetic flux of the coil changes, generating an induced electromotive force, thereby capturing vibration energy. This electromagnetic energy capture device can rotate around its center at a wide angle and collect vibration energy in multiple degrees of freedom. Furthermore, the structural space utilization of this electromagnetic energy capture device is high. However, when the electromagnetic energy capture device rotates, frictional forces at the connection between the shell and the sphere cause significant losses, resulting in low energy capture efficiency. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a spring-pendulum-type spherical multi-magnetoelectric energy-capturing device with high space utilization and high energy-capturing efficiency.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a spring pendulum-type spherical multi-magnetic electric energy capture device, including an energy capture mechanism, a rechargeable battery and a linear voltage regulator circuit, wherein the energy capture mechanism is used to capture environmental energy to charge the rechargeable battery, and the linear voltage regulator circuit is used to convert the voltage output by the rechargeable battery into the working voltage output required by the ocean monitoring system, and the energy capture mechanism includes a mounting frame with a spherical outer surface, n spring pendulum structures and n voltage conversion modules, where n is an integer greater than or equal to 3, and the mounting frame is used to roll under external vibration excitation, and the material of the mounting frame is non-magnetic material. N spring pendulum structures are evenly spaced and fixedly installed on the mounting frame. The n spring pendulum structures are connected to n voltage conversion modules in a one-to-one correspondence. Each of the spring pendulum structures includes a spring, a coil and a permanent magnet. Each spring pendulum structure is used to swing its permanent magnet to form an alternating magnetic field through the swing of its spring when the mounting frame rolls, so that the magnetic flux in its coil changes to generate a magnetoelectric AC voltage that is output to the voltage conversion module connected to it. Each voltage conversion module is used to convert the magnetoelectric AC voltage output to it into a DC voltage that can charge the rechargeable battery and output it to the rechargeable battery to charge the rechargeable battery.

[0007] Compared with the prior art, the advantage of the present invention is that an energy capture mechanism is formed by a mounting frame with a spherical outer surface, n spring pendulum structures and n voltage conversion modules. The mounting frame will roll under environmental vibration excitation. When the mounting frame rolls, the spring of each spring pendulum structure will be forced to swing, causing its permanent magnet to shake and form an alternating magnetic field, thereby causing the magnetic flux in its coil to change and generate a magnetoelectric AC voltage to be output to the voltage conversion module connected to it. Since the n spring pendulum structures are evenly spaced and fixedly installed on the mounting frame and are distributed in a spherical shape, the n spring pendulum structures can receive vibration excitation in multiple directions, capture vibration energy in multiple directions and under any excitation size, and there is no loss caused by friction. At the same time, the overall structure is not affected by any support shaft. Therefore, the present invention has high space utilization and high energy capture efficiency.

[0008] Furthermore, each of the spring pendulum structures also includes a cover plate, a cylinder, a mounting seat and a base. The cover plate, the cylinder, the mounting seat and the base are all made of non-magnetic materials. The cylinder is a cylindrical structure that runs through the top and bottom, and has an upper opening and a lower opening. The cover plate is installed above the cylinder and closes its upper opening. The base is installed below the cylinder and closes its lower opening. A mounting cavity is formed between the cover plate, the cylinder and the base. The coil, the permanent magnet, the spring and the mounting seat are arranged in the mounting cavity from top to bottom. The permanent magnet is a cylindrical structure, and the alternating magnetic field it generates is in the direction of its axial direction. The mounting seat is fixed to the base, the lower end of the spring is fixed to the mounting seat, the lower end of the permanent magnet is fixedly connected to the upper end of the spring, the coil is fixed to the cover plate, and a gap is provided between the coil and the permanent magnet for the permanent magnet to swing. The coil of each spring pendulum structure is used to output a magnetoelectric alternating voltage to the voltage conversion module corresponding to the spring pendulum structure.

[0009] Furthermore, the size of the spring gradually increases from top to bottom, that is, it is in the shape of a compression spring that is smaller at the top and larger at the bottom.

[0010] Furthermore, the base, the cover plate and the mounting seat are all circular plates, the cover plate, the cylinder, the mounting seat and the base are coaxially arranged, the lower end face of the cylinder is fixed to the upper end face of the base and the two are in a fit state, the diameter of the base is equal to the outer diameter of the cylinder, the upper end face of the cylinder is fixed to the lower end face of the cover plate and the two are in a fit state, the diameter of the cover plate is equal to the outer diameter of the cylinder, the coil, the permanent magnet and the spring are all coaxial with the cylinder, and the lower end face of the mounting seat is fixed to the upper end face of the base and is in a fit state.

[0011] Furthermore, the mounting frame includes an outer spherical shell and an inner spherical shell, and the materials of the outer spherical shell and the inner spherical shell are both non-magnetic materials. The inner spherical shell is located inside the outer spherical shell and is concentric with the outer spherical shell. Each spring pendulum structure passes through the outer spherical shell and enters the interior of the outer spherical shell with its base facing outward and the cover facing inward, and its cover end face is tangent to the inner spherical shell. The rechargeable battery, the linear voltage regulator circuit and n voltage conversion modules are all installed inside the inner spherical shell. The coil of each spring pendulum structure is connected to the corresponding voltage conversion module through the wire passing through the inner spherical shell, and the positive and negative poles of the rechargeable battery are respectively led out through the wires passing through the inner spherical shell and the outer spherical shell.

[0012] Furthermore, the outer spherical shell is formed by splicing n first shells whose main views are regular pentagons and multiple second shells whose main views are regular hexagons, and the side length of the pentagon is equal to the side length of the hexagon. The n first shells are evenly spaced, each first shell is surrounded by 5 second shells, and the five side surfaces of each first shell are spliced ​​one-to-one with one side surface of the 5 second shells around it. Each first shell is provided with an inner and outer through-hole mounting hole, and the n spring pendulum structures correspond one-to-one to the n first shells. Each spring pendulum structure passes through the mounting hole on the corresponding first shell, and the inner spherical shell is formed by assembling two hemispherical shells.

[0013] Furthermore, each of the voltage conversion modules includes a voltage doubling rectifier circuit and a DC-DC converter. The voltage doubling rectifier circuit is used to access the magnetoelectric AC voltage and rectify the magnetoelectric AC voltage to obtain a DC voltage output to the DC-DC converter. The DC-DC converter is used to convert the DC voltage output thereto into a DC voltage capable of charging the rechargeable battery and output it to the rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the spring-pendulum-type spherical multi-magnetic electric energy capture device of the present invention;

[0015] Figure 2 A half-section diagram of the spring-pendulum-type spherical multi-magnetic electric energy capture device of the present invention;

[0016] Figure 3 This is an exploded view of the spring pendulum structure of the spherical multi-magnetic electric energy harvesting device of the spring pendulum type of the utility model;

[0017] Figure 4 This is the electrical connection block diagram of the spring-pendulum-type spherical multi-magnetic electric energy harvesting device of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0019] Example 1: As shown in the figure, a spherical multi-magnetic electric energy capture device with a spring 21 pendulum type includes an energy capture mechanism, a rechargeable battery and a linear voltage regulator circuit. The energy capture mechanism is used to capture environmental energy to charge the rechargeable battery. The linear voltage regulator circuit is used to convert the voltage output by the rechargeable battery into the working voltage output required by the ocean monitoring system. The energy capture mechanism includes a mounting frame 1 with a spherical outer surface, 12 spring pendulum structures 2 and 12 voltage conversion modules. The mounting frame 1 is used to roll under external vibration excitation. The material of the mounting frame 1 is non-magnetic material. The 12 spring pendulum structures 2 are evenly spaced and fixedly installed on the mounting frame. On the frame 1, 12 spring pendulum structures 2 are connected to 12 voltage conversion modules in a one-to-one correspondence. Each spring pendulum structure 2 includes a spring 21, a coil 22 and a permanent magnet 23. Each spring pendulum structure 2 is used to swing its permanent magnet 23 to form an alternating magnetic field through the swing of its spring 21 when the mounting frame 1 rolls, so that the magnetic flux in its coil 22 changes to generate a magnetoelectric AC voltage, which is output to the voltage conversion module connected to it. Each voltage conversion module is used to convert the magnetoelectric AC voltage output to it into a DC voltage that can charge the rechargeable battery and output it to the rechargeable battery to charge the rechargeable battery.

[0020] In this embodiment, the mounting frame 1 will roll under the excitation of environmental vibration. When the mounting frame 1 rolls, the spring 21 of each spring pendulum structure 2 will be forced to swing, causing its permanent magnet 23 to shake and form an alternating magnetic field, thereby causing the magnetic flux in its coil 22 to change and generate a magnetoelectric AC voltage to be output to the voltage conversion module connected thereto. Since the 12 spring pendulum structures 2 are evenly spaced and fixedly installed on the mounting frame 1 and are distributed in a spherical shape, the 12 spring pendulum structures 2 can receive vibration excitation in multiple directions, capture vibration energy in multiple directions and under any excitation size, and there is no loss caused by friction, so the energy capture efficiency is high. At the same time, the overall structure is not affected by any support shaft, and the space utilization rate is high.

[0021] Example 2: This example is basically the same as Example 1, except that: in this example, each spring pendulum structure 2 further includes a cover plate 24, a cylinder 25, a mounting seat 26 and a base 27. The cover plate 24, the cylinder 25, the mounting seat 26 and the base 27 are all made of non-magnetic materials. The cylinder 25 is a cylindrical structure that runs through the top and bottom, with an upper opening and a lower opening. The cover plate 24 is installed above the cylinder 25 and closes its upper opening. The base 27 is installed below the cylinder 25 and closes its lower opening. A mounting cavity is formed between the cover plate 24, the cylinder 25 and the base 27. The coil 2 2. The permanent magnet 23, the spring 21 and the mounting seat 26 are arranged in the mounting cavity from top to bottom. The permanent magnet 23 is a cylindrical structure, and the direction of the alternating magnetic field it generates is along its axial direction. The mounting seat 26 is fixed to the base 27, and the lower end of the spring 21 is fixed on the mounting seat 26. The lower end of the permanent magnet 23 is fixedly connected to the upper end of the spring 21. The coil 22 is fixed on the cover plate 24. A gap is provided between the coil 22 and the permanent magnet 23 for the permanent magnet 23 to swing; the coil 22 of each spring pendulum structure 2 is used to output a magnetoelectric alternating current voltage to the voltage conversion module corresponding to the spring pendulum structure 2.

[0022] In this embodiment, the size of the spring 21 gradually increases from top to bottom, that is, it is in the shape of a compression spring 21 that is smaller at the top and larger at the bottom.

[0023] In this embodiment, the base 27, the cover plate 24 and the mounting seat 26 are all circular plates. The cover plate 24, the cylinder 25, the mounting seat 26 and the base 27 are coaxially arranged. The lower end face of the cylinder 25 is fixed to the upper end face of the base 27 and the two are in a fit state. The diameter of the base 27 is equal to the outer diameter of the cylinder 25. The upper end face of the cylinder 25 is fixed to the lower end face of the cover plate 24 and the two are in a fit state. The diameter of the cover plate 24 is equal to the outer diameter of the cylinder 25. The coil 22, the permanent magnet 23 and the spring 21 are all coaxial with the cylinder 25. The lower end face of the mounting seat 26 is fixed to the upper end face of the base 27 and is in a fit state.

[0024] Example 3: This example is basically the same as Example 2, with the difference being that in this example, the mounting frame 1 includes an outer spherical shell 11 and an inner spherical shell 12, both of which are made of non-magnetic materials. The inner spherical shell 12 is located inside the outer spherical shell 11 and is concentric with the outer spherical shell 11. Each spring pendulum structure 2 passes through the outer spherical shell 11 and enters the interior of the outer spherical shell 11 with its base 27 facing outward and the cover 24 facing inward, and the end face of its cover 24 is tangent to the inner spherical shell 12. The rechargeable battery, linear voltage regulator circuit and 12 voltage conversion modules are all installed inside the inner spherical shell 12. The coil 22 of each spring pendulum structure 2 is connected to the corresponding voltage conversion module through a wire passing through the inner spherical shell 12, and the positive and negative poles of the rechargeable battery are respectively led out through wires passing through the inner spherical shell 12 and the outer spherical shell 11.

[0025] In this embodiment, the outer spherical shell 11 is formed by splicing 12 first shells 111 whose main views are regular pentagons and 20 second shells 112 whose main views are regular hexagons, and the side length of the pentagon is equal to the side length of the hexagon. The 12 first shells 111 are evenly spaced, and each first shell 111 is surrounded by 5 second shells 112. The five side surfaces of each first shell 111 are spliced ​​one-to-one with one side surface of the 5 second shells 112 around it. Each first shell 111 is provided with an inner and outer mounting hole. The 12 spring pendulum structures 2 correspond one-to-one to the 12 first shells 111, and each spring pendulum structure 2 passes through the mounting hole on the corresponding first shell 111. The inner spherical shell 12 is formed by assembling two hemispherical shells.

[0026] In this embodiment, 12 first shells 111 are assembled to form an outer spherical shell 11, and two hemispherical shells are assembled to form an inner spherical shell 12, which facilitates the installation of 12 spring pendulum structures 2, 12 voltage conversion modules, rechargeable batteries and linear voltage stabilization circuits, and the 12 spring pendulum structures 2 are positioned by the 12 first shells 111 so that the 12 spring pendulum structures 2 are evenly distributed.

[0027] Example 4: This example is basically the same as Example 1, with the difference being that in this example, each voltage conversion module includes a voltage doubler rectifier circuit and a DC-DC converter. The voltage doubler rectifier circuit is used to access the magnetoelectric AC voltage and rectify the magnetoelectric AC voltage it accesses to obtain a DC voltage that is output to the DC-DC converter. The DC-DC converter is used to convert the DC voltage output thereto into a DC voltage that can charge the rechargeable battery and output it to the rechargeable battery.

[0028] To sum up, the spherical multi-magnetoelectric energy capture device with spring 21 pendulum of the utility model cooperates with the mounting frame 1 with a spherical outer surface and n spring pendulum structures 2. The mounting frame 1 rolls under the excitation of environmental vibration, so that the springs 21 of the n spring pendulum structures 2 all swing, thereby causing the permanent magnets 23 of the n spring pendulum structures 2 to shake, and then causing the coils 22 of the n spring pendulum structures 2 to produce magnetic flux changes and generate magnetoelectric AC voltage outputs, thereby realizing the collection of vibration energy in multiple degrees of freedom. The energy collection method is based on the swing of the spring 21, and does not require any additional support shaft, so the space utilization rate is high.

Claims

1. A spring-pendulum-type spherical multi-magnetoelectric energy-harvesting device comprising an energy-harvesting mechanism, a rechargeable battery, and a linear voltage-stabilizing circuit. The energy-harvesting mechanism is used to capture ambient energy to charge the rechargeable battery, and the linear voltage-stabilizing circuit is used to convert the voltage output by the rechargeable battery into the operating voltage output required by an ocean monitoring system. The energy capture mechanism includes a mounting frame with a spherical outer surface, n spring pendulum structures and n voltage conversion modules, where n is an integer greater than or equal to 3. The mounting frame is used to roll under external vibration excitation, and the material of the mounting frame is non-magnetic material. The n spring pendulum structures are evenly spaced and fixedly installed on the mounting frame, and the n spring pendulum structures are connected one-to-one with the n voltage conversion modules. Each of the spring pendulum structures includes a spring, a coil and a permanent magnet. Each spring pendulum structure is used to swing its permanent magnet to form an alternating magnetic field through the swing of its spring when the mounting frame rolls, so that the magnetic flux in its coil changes to generate a magnetoelectric AC voltage, which is output to the voltage conversion module connected to it. Each voltage conversion module is used to convert the magnetoelectric AC voltage output thereto into a DC voltage that can charge the rechargeable battery and output it to the rechargeable battery to charge the rechargeable battery.

2. The spring-pendulum spherical multi-magnetic electric energy harvesting device according to claim 1, characterized in that Each of the spring pendulum structures further includes a cover, a cylinder, a mounting seat and a base. The cover, the cylinder, the mounting seat and the base are all made of non-magnetic materials. The cylinder is a cylindrical structure that passes through from top to bottom and has an upper opening and a lower opening. The cover is installed above the cylinder and closes its upper opening. The base is installed below the cylinder and closes its lower opening. A mounting cavity is formed between the cover, the cylinder and the base. The coil, the permanent magnet, the spring and the mounting seat are arranged in the mounting cavity from top to bottom. The permanent magnet is a cylindrical structure that generates an alternating magnetic field in the axial direction. The mounting seat is fixed to the base. The lower end of the spring is fixed to the mounting seat. The lower end of the permanent magnet is fixedly connected to the upper end of the spring. The coil is fixed to the cover. A gap is provided between the coil and the permanent magnet for the permanent magnet to swing. The coil of each spring pendulum structure is used to output a magnetoelectric alternating voltage to a voltage conversion module corresponding to the spring pendulum structure.

3. The spring-pendulum spherical multi-magnetic electric energy harvesting device according to claim 2, characterized in that The size of the spring gradually increases from top to bottom, that is, it is in the shape of a compression spring that is smaller at the top and larger at the bottom.

4. The spring-pendulum spherical multi-magnetic electric energy harvesting device according to claim 2, characterized in that The base, the cover plate and the mounting seat are all circular plates. The cover plate, the cylinder, the mounting seat and the base are coaxially arranged. The lower end face of the cylinder is fixed to the upper end face of the base and the two are in a fit state. The diameter of the base is equal to the outer diameter of the cylinder. The upper end face of the cylinder is fixed to the lower end face of the cover plate and the two are in a fit state. The diameter of the cover plate is equal to the outer diameter of the cylinder. The coil, the permanent magnet and the spring are all coaxial with the cylinder. The lower end face of the mounting seat is fixed to the upper end face of the base and is in a fit state.

5. The spring-pendulum spherical multi-magnetic electric energy harvesting device according to claim 2, characterized in that The mounting frame includes an outer spherical shell and an inner spherical shell. The materials of the outer spherical shell and the inner spherical shell are both non-magnetic materials. The inner spherical shell is located inside the outer spherical shell and is concentric with the outer spherical shell. Each spring pendulum structure passes through the outer spherical shell and enters the interior of the outer spherical shell with its base facing outward and the cover facing inward, and its cover end face is tangent to the inner spherical shell. The rechargeable battery, the linear voltage regulator circuit and n voltage conversion modules are all installed inside the inner spherical shell. The coil of each spring pendulum structure is connected to the corresponding voltage conversion module through the wire passing through the inner spherical shell, and the positive and negative poles of the rechargeable battery are respectively led out through the wires passing through the inner spherical shell and the outer spherical shell.

6. The spring-pendulum spherical multi-magnetic electric energy harvesting device according to claim 5, characterized in that The outer spherical shell is formed by splicing n first shells with regular pentagons in the main view and multiple second shells with regular hexagons in the main view, and the side length of the pentagon is equal to the side length of the hexagon. The n first shells are evenly spaced, each first shell is surrounded by 5 second shells, and the five side surfaces of each first shell are spliced ​​one-to-one with one side surface of the 5 second shells around it. Each first shell is provided with an inner and outer through-hole mounting hole, and the n spring pendulum structures correspond one-to-one to the n first shells. Each spring pendulum structure passes through the mounting hole on the corresponding first shell. The inner spherical shell is formed by assembling two hemispherical shells.

7. The spring-pendulum spherical multi-magnetic electric energy harvesting device according to claim 1, characterized in that Each of the voltage conversion modules includes a voltage doubling rectifier circuit and a DC-DC converter. The voltage doubling rectifier circuit is used to access the magnetoelectric AC voltage and rectify the magnetoelectric AC voltage to obtain a DC voltage and output it to the DC-DC converter. The DC-DC converter is used to convert the DC voltage output thereto into a DC voltage capable of charging the rechargeable battery and output it to the rechargeable battery.

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